Collapsible viewer



FIG. 1 is a front and top-right perspective view of a collapsible viewer showing my new design;

FIG. 2 is a rear and bottom-left perspective view thereof;

FIG. 3 is a top-left perspective view thereof in the open position;

FIG. 4 is a bottom-right perspective view thereof in the open position; and,

FIG. 5 is a top-left perspective view thereof in an open position with the sliding covers in partially opened positions. 

The ornamental design for collapsible viewer, as shown and described. 